Need to write System / Integration Test for Crm Plugin

[dazinator]

The Crm Plugin is unit tested, but now need to write a system test that will actually:-

1. Create a test entity in crm
2. Register the plugin in CRM and register to fire on the creation of the test entity.
3. Create a new entity record (that should trigger the plugin)
4. Verify the plugin ran and captured the creation version of the record in the custom field.

A lot of this code will also prove useful later on when creating the API to provision entities for the sync process.